How to clean up "brown water"
 

Hi,

Just joined the group -- looks like a great resource.

I have built a pond (my very first) that is about 9ft by 7 ft and 30"
deep at places. I have it inhabited by 7 goldfish and 2 koi (all are
under 5" right now). I have a waterfall powered by a 1200 gal/hour pump.
My skimmer is a "Savio compact skimmerfilter". The skimmer (at least
claims) is a skimmer, a biofilter, and UV (optional, of course). After
installing it -- I had to wonder about the biofiltering capabilites as the
matting quickly got clogged up with "stuff", so I added some lava rock int
he compartment that the pump resides.

Now, that I have described my pond -- the problem. I have mostly brown
water. It doesn't look like alge (at least I don't think so). However
adding a clarifier like "crystal lagoon" didn't clear it up. So what is
the best way to clear this up? And is there a way to keep the pond clean?

Also anyone have comments on the savio?

Thanks a lot for the information

Nasa